M kit has 4 different parts; gasket and seal are nbr rubber
NSN 5945-00-004-3901
NSN 6320-01-585-8468
NSN 5910-01-607-8212
NSN 5920-01-356-0431
NSN 6110-01-318-7690
NSN 5998-00-170-6693
NSN 5950-00-985-3109
NSN 6620-01-377-0414
NSN 6110-01-596-7302
NSN 5960-00-761-6722
NSN 6610-00-553-5103
NSN 5935-00-704-6711
Last Updated: 05/15/2024